Combination instrument.



E. A. MARX. COMBINATION INSTRUMENT. APPLICATION rxLBD 001.1. 1913.

1,1 18,873. Patent-ea 11011.24, 1914.

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p EMIL A. MARX, 0F ROYAL CENTER, INDIANA.

COMBINATION INSTRUMENT.

Specication of Letters Patent.

Patented N ov. 24, 1914.

Application filed October 1, 1913. Serial No. 792,831.

To aZZ 'whom t may concern: i

Be it known that I, Emir. A. MARX, a citi- Zen of the United States, residing at Royal Center, in the county of Cass and State of Indiana, have invented new and useful Imi piovements in Combination Instruments, of which the following is a specification.

This invention relates `to a combination square, level, and gage, the primary object being to provide a device of" this `character wherein the elements mentioned copcrate with each other in such a manner that a number of different operations may be performed by thesethree elements alone in an elicient and accurate manner.

A further object of the invention is to provide a combination device of the class described which includes a level stock having a pair of spirit tubes ymount-ed thereon so as to be disposed at right angles to each `other and in a common plane, together with a movable arm pivoted to one end of the level stock and provided with alinear scale, it being adapted to be adjusted angularly with respect to the longitudinal axis of the said stock for rendering the device useful as a square, the said arm being adapted to be folded inwardly against a limiting ysurface which maintains the same parallel to the axis'of the said stock.V A longitudinally adjustable gage device is also mounted within the stock for movement in the plane of the spirit tubes and parallel tothe said arm,

-when in its innermost position whereby the scale upon the arm may be used in determinj ing the linear adjustment of the ,gage device. A still further object is `the provision of a combination device whose elements are simple in construction and are arranged in a neat and compact manner whereby the device is rendered inexpensive in the cost of manufacture, durable, and easy to operate.

The invention consists in the `features of construction, combination, and arrangement of parts, hereinafter' `fully described and claimed, reference being `had to the accompanying drawing., in which:` j

Figure l is a side elevation of 4the device,

. showing the movable arm extended at right angles to the level stock for use in marking off a timber; Fig. 2 is a longitudinal sectional view on lineQ-Q of Fig. l; Fig. 3 is `a side elevation, showing themovable arm folded inwardly for use in conjunction with the gage device, the latter `beingshown in use in inscribinga horizontal line parallel `member 9, which latter to another-horizontal line; Fig. 4 is a transverse sectional view on line 4 4 of Fig.` l;

and, Fig. 5 is a similar View on line 5-5 of the same figure.

In the drawing, the numeral l designates the elongated rectangular stock of the device, which is preferably constructed of some light and durable metal, and which includes the parallel side members and 3 and the connecting cross members 4l. A movable arm 5, which is graduated so as to provide the linear scales (5 extending longitudinally thereon, is pivoted to one end of the stock by means of the pivot bolt 7 `which latter `is provided with aclamping head 8 by which the movable arm may be secured in different angularly adjusted positions with respect to the stock. The stock l has one side edge of its side member 3 and adjacent edgesof certain cross members et cut away as at 3 and ll respectively in order that the arm 5 may swing inwardly against the shoulders Lb which are provided upon the said members fl. These shoulders are disposed in true 1ongitudinal alineinent, whereby they will maintain the arm 5 parallel to the longitudinal axis of the stock when the said arm is folded inwardly and engages the said shouli i ders evenly,

active faces of the side In this position, which is shown particularly in Fig. 1 of the drawing, the arm 5 is adapted to engage the head 9 of a longitudinally adjustable limiting has its inner end portion threaded within an opening 9* provided in the rst cross portion et of the stock from the end to which the said arm is pivoted. The limiting member just described is provided in` order that wear in the movable arm pivot may be allowed for whenever necessary so that the said arm will be disposed atexactly ninety degrees to the longitudinal axis of the stock when it is secured in e11- gagement with the head of the limiting member by means of theclamping head 8. A lock nut 9c is threaded ontlo the limiting member for engagement with the cross member of the stock in which the said limit-` of the stock and conse-` stock nearest to thepivot ing member is mounted. rlhis lockl nut serves as means for securing the limiting member effectively in its different adjusted positions.

A spirit tube 10 is mounted within the stock so as to extend at right angles to its side members 2 and 3, and a second spirit tube 11 is mounted upon the inner face of the side member 2 in such a manner that it is disposed parallel to the longitudinal axis of the stock and in the plane of the tube 10. The tube 11 is connected with the side member 2 of the stock by means of the adjustable screw members 11- and 11b, which are threaded into lateral openings in the opposite ends of the body of the tube and whose adjusting heads 11c are swiveled in the openings 11d provided in the said side member of the stock. Upon adjustment of these screw members, the tube may be adjusted angularly with respect to the stock whereupon the tube may be secured against further angular movement by tightening the lock nuts11e which are threaded onto the respective screw members for engagement with the inner face of the stock member 2. The last-named spirit tube may be used in leveling horizontal surfaces, whereas the tube 10 is intended primarilyv for use in plumbing vertical surfaces.

A cylindrical gage bar 12 is mounted for longitudinal slidable movement within alining openings 13 provided in the pair of cross members 4 disposed at the end of the stock opposite tothe end to which the movable arm 5 is connected. The bar 12 is provided in its outer end with a transverse opening 14 in which a pencil 15 or other marking instrument may be mounted. A thumb screw 16 is disposed between the gage bar and a boss 17 provided upon the inner face of the stock member 3 between the particular cross members 13 just referred to, with its outer threaded end 18 engaged within a threaded opening 19 in the said boss. The inner end 2() of the said screw is adapted for engagement with the gage bar, so that the latter may be locked in its. different longitudinally adjusted positions by manipulation of the thumb screw in a manner which should be readily understood.

As shown particularly in Figs. 1 yand 2, the movable arm 5 may be extended into a position at right angles to the stock of the level for use in marking off a timber in addition to the use of the stock as a level and plumb device. In Fig. 3, the device is shown in use in inscribing a horizontal line parallel to a horizontal line. Prior to performing this latter operation, the movable arm 5 is folded inwardly against the limiting shoiilders 1b and is secured therein by the clamping nut 8. Then, by loosening the thumb screw 16 and adjusting the gage bar 12 longitudinally with reference to the scale provided upon the arm 5, the said gage bar may be set in such a position that the marking instrument 15 will be disposed at the desired distance from the opposite Vend of the stock 1, whereuponl the bar 12 may be secured in this position by means of the thumb screw. After this preparation has been made, the stock of the level may be positioned with adjacent side edges of the members 2 and 3 in even engagement with the wall, or other vertical surfaces upon which the line is to be inscribed, it being understood that the gage bar has been turned previously so that the marking instrument will project inwardly toward the said surface. The upper end of the stock is brought into registration with the line already inscribed, such as that indicated by the numeral 21 and the stock is moved horizontally along the said vertical surface and is maintained in a vvertical position by reference to the spirit tube 10, while the marking point of the instrument 15 is drawn along the said surface so as to trace a line 22 thereon, which will be parallel to the first-named line.

From the foregoing description, taken in connection with the accompanying kdrawing, it should be apparent that 'l have provided a simply constructed combination instrument which comprises few parts, the same being arranged so that they are combined for use in performing a number of operations in a convenient and accurate manner which are ordinarily performed by a greater number of implements. l desire to have it understood, however, that l may resort to minor changes in construction, falling within the scope of the appended claims, as may be deemed necessary in practice.

Having thus described my inventiomwhat l claim is:

1. An instrument ofthe class described comprising an elongated rectangular stock, a movable arm pivoted to one end of the stock and adapted tobe extended laterally therefrom or to befolded into the means for limiting the inward movement of the said arm to maintain the same in a position parallel to the longitudinal axis of the stock, the said movable arm being provided with a linear scale, a longitudinally adjustable gage bar mounted within the stock and adapted for movement longitudinally with respect to the movable arm when in its innermost position, the said gage barbeing adapted toextend arm for cooperation with its scale when the said arm is in its folded position and being provided with a transverse opening, and a marking instrument adapted to be mounted within said opening. l

2. An instrument of the class described the details of stock,"y

parallel to the movable stoc comprising an elongated rectangular stock, a movable arm pivoted to one end of the stock and adapted to be extended laterally therefrom or to be foldedinto the stock, means for limiting the inward movement of the said arm to maintain the same in a position parallel to the longitudinal axis of the stock, the said movable arm being provided with a linear scale, a longitudinally adjustable gage bar mounted Within the stoclr and adapted for movement longitudinally With respect to the movable arm When in its innermost positionfthe said gage bar being adapted to extend parallel to the movable arm for coperation with its scale When the said arm is in its folded position and being provided with a transverse opening, a marliing instrument adapted to be mounted Within the said opening, and, means by which the gage bar may be secured in its diflerentadjusted positions.

An instrument of the class described comprising an elongated rectangular stock, a movable arm pivoted to one end of the l: and adapted to be extended laterally therefrom or to be folded into the stock1 means for limiting the inward movement of the said arm to maintain the same in a position parallel to the longitudinal axis of the stock, the said movable arm being provided with a linear scale, a longitudinally adjustable gage bar slidably and rotatably mount ed Within the stock and adapted for movement longitudinally with respect to the movable arm when in its innermost position, the said gage bar being adapted to extend parallel to the movable arm for coperation with its scale when the said arm is in its folded position and being provided with a transverse opening, a marking instrument adapted to be mounted within the said opening, and means by which the gage bar may be secured in its different adjusted positions.

In testimony whereof I affix my signature in presence of two Witnesses.

EMIL A. MARX.

Witnesses:

R. G. HOLLIS, W. H. LU'rns.

Uoicl otithis patent may be obtained for uve cents each, by addressing the Commissioner of Patent Washington, D. OJ' 

